Disposable test tube rack



FIG. 1 is an elevated, perspective front view of a double length disposable test tube rack in accordance with our invention;

FIG. 2 is an upwardly angled, perspective front view of FIG. 1;

FIG. 3 is an end side view thereof, taken from the left side of FIG. 1;

FIG. 4 is an end side view thereof, taken from the right side of FIG. 1; and,

FIG. 5 is a bottom view of my invention as shown in FIG. 1. 

The ornamental design for a disposable test tube rack, as shown and described herein. 